Thermo Scientific 410iQ Instruction Manual page 186

Troubleshooting
Troubleshooting Guide
6-4 410iQ Instruction Manual
Problem
Alarm – 5V/24V Step Board
Alarm – Conc.
Alarm – Analog I/O
Alarm – Digital I/O
Alarm – Auto Bkg
Cal/Check
Alarm – Auto Span
Cal/Check
Alarm – Bench Temp
Thermistor Open
Alarm – Bench Temp
Thermistor Short
Alarm – Motor Speed too
low
Alarm – Motor Speed too
high
Alarm – Module Thermistor
Open
Alarm – Module Thermistor
Short
Alarm – Bench Temp
Thermistor Open
Possible Cause Action
temperature is not too high or in
alarm.
Defective DMC PCB Replace DMC board.
Cable connection Check the cable connections to
that Step POL board.
Concentration has Check to ensure range
exceeded range limit corresponds with expected value.
If not, select proper range.
Concentration low Check user-defined low set point.
Be sure the minimum trigger is
set as desired.
Defective PCB Replace Analog board.
Defective PCB Replace Digital board.
Incorrect high alarm limit Verify the high limit is correct via
Settings>Status and
Alarms>Concentrations screen.
Instrument background Recalibrate the instrument.
calibration failed
Incorrect high alarm limit Verify the high limit is correct via
Settings>Status and
Alarms>Concentrations screen.
Instrument span Recalibrate the instrument.
calibration failed
Cable connection Check connection from heater to
DMC board. Reseat if needed.
Cable connection Check connection from heater to
DMC board. Reseat if needed.
Cable connection Check connection from motor to
DMC board. Reseat if needed.
Defective Heater Replace motor as needed.
Defective DMC board Replace board as needed.
Cable connection Check connection from motor to
DMC board. Reseat if needed.
Defective Heater Replace motor as needed.
Defective DMC board Replace board as needed.
Defective DMC board Replace board as needed.
Defective DMC board Replace board as needed.
Cable connection Check the cable connection from
the thermistor to the DMC board.
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